You MUST plant them now (plenty of time for them to grow and flower still into autumn.) Without fresh leaf growth and more energy for the tuber, they won't survive. Even if you get no flowers (which I doubt), you will be keeping the plant going.

Yes MG, just keep them dry and replant next spring, he always did this and he grew some beautiful specimins, he used to have all the old glads with leaves still attached hanging on a rope from the garage roof, he would rub of the small corms and then replant even more the following spring.

Ah but they had grown and flowered then he lifted them, as I read this Alextb's glads haven't been in the ground since last year when they were lifted for storage and selling in the autumn. Think I'd go with Bertie Guest.